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Go channels explained: buffered, unbuffered, select, closing channels and common patterns. Clear concurrent communication.

How to read environment variables in Go, configure per environment, validate and separate secrets. Explicit configuration with no magic.

A practical guide to writing executable specs. Reduce ambiguity, decide early, and work effectively with AI and coding agents without creating legacy.

Multi-stage Dockerfile for Go, static binaries, environment variables, healthcheck and deployment. Minimal images with no surprises.